are my rotors installed correctly???

[PCx188]

i was just looking at a picture of my rotors and noticed something that didnt look right for some reason..

should the slots and holes be facing towards the other direction? did i end up putting the passenger side rotor on the driver side???

[PCx188]

also, did i install my end links facing the right direction as wel?

[mr2magic]

End links - other way round :O)
Brake disks - I don't think it will make a large difference to be honest. In that orientation the dust will be transfered towards the hub. I think it's better if the dust is transfered outwards towards the rim.

[PCx188]

Originally Posted by mr2magic

End links - other way round :O)
Brake disks - I don't think it will make a large difference to be honest. In that orientation the dust will be transfered towards the hub. I think it's better if the dust is transfered outwards towards the rim.

end links are supposed to face the other way? i installed them according to how the stock ones were installed as pictured here...



can anybody else confirm on the end links?

[scooterman]

my end links are like yours i couldn't install them the other way cant get stud through strut not enough room.

[Bak@EMSPowered]

Yes, you have the rotors on correct.

[mr2greasemonkey]

endlinks correct, rotors corrrect.

[PCx188]

thanks guys! i guess when i stare at things i dont usually stare at, i start thinking too hard about it....

[PCx188]

hmmm i was just looking at my front rotors and they are installed opposite of how i did my rears. is that going to be a big problem?

the fronts are a few years old and starting to look it...so i will replace them with regular rotors maybe next spring or so...i was just wondering if its a MUST to reverse them to
match the rears?

[Luni]

LOL I never even looked to see if I should have put my rotors on a certain way or not. I just put the damn things on.

[kbrew8991]

its not like slots or holes provide any real function, just put them on however looks best to you

[PCx188]

ok cool. thanks. its not like anybody really looks at them anyway. for the future i am staying with solid rotors in the front. i heard those provide the same braking power as the cross drill slots for an NA.

[Luni]

Its my understanding the slots help keep the brake pads clean so dead material comes off the surface and youre always dealing with fresh material.

I know it doesnt necessarily equate to more airflow, and I know crossdrilling dont really do anything, but the slots are supposed to keep fresh material on your pads (at the expense of slightly less pad life) so your pads are tiptop every time you go to use them.

[Gairloch]

I don't see how scraping pads can be a benefit. Pad material doesn't exactly have a shelf life or care how many times it's heat cycled.

[Luni]

If that was the case then pads would just last forever and they would never dust.

Having dust on the pad material reduces their ability to transfer heat away from the pad to the rotor and let the rotor do its job.

The physics of it makes sense to me, I dont really think it makes a significant enough difference to matter in the real world, but I have no doubt moving the dust through the slots and outward keeps the pad surfaces fresh and optimizes their ability to create friction and transfer heat.

[kbrew8991]

or they chew through pads faster than necessary while providing zero benifit

not that we've got any background with these items in performance applications or anything

[Redstar]

Pad material transfer is important - why do you bed in brakes? It seems if you were constantly scraping material off the pad it wouldn't bed right. I've never used slotted or x-drilled rotors so maybe I'm wrong.

I thought the main idea behind slotted rotors was to allow pad outgassing; which really isn't a problem anymore.

[canadam]

I thought the slots were intended to allow gases escape. If that was the case, I think I'd put the rotors on the other way so the centrifigul action pushed the gas out, because of the angle of the slot, it seems that it may be pushed inwards, but I've never looked into the right or wrong way to install them.

...but like everyone else has said so far, seems like the slots likely do a whole lot of nothing anyway

[kbrew8991]

Originally Posted by Redstar

Pad material transfer is important - why do you bed in brakes? It seems if you were constantly scraping material off the pad it wouldn't bed right. I've never used slotted or x-drilled rotors so maybe I'm wrong.

I thought the main idea behind slotted rotors was to allow pad outgassing; which really isn't a problem anymore.

and thats likely a big factor, other things to consider - reduced contact area, reduced mass (heat sink properties), etc

[Bak@EMSPowered]

Slotted rotors are meant to remove moisture and built up gasses from between the rotor and the pad. And they ARE directional.

"Discs may also be slotted, where shallow channels are machined into the disc to aid in removing dust and gas. Slotting is the preferred method in most racing environments to remove gas, water, and de-glaze brake pads. Some discs are both drilled and slotted. Slotted discs are generally not used on standard vehicles because they quickly wear down brake pads; however, this removal of material is beneficial to race vehicles since it keeps the pads soft and avoids vitrification of their surfaces.


Even on standard vehicles drilled or slotted discs still have a positive effect in wet conditions because the holes or slots prevent a film of water building up between the disc and the pads. Crossdrilled discs will eventually crack at the holes due to metal fatigue. Cross-drilled brakes that are manufactured poorly or subjected to high stresses will crack much sooner and more severely."